This one might stump quite a few of you, because it’s definitely the most rarely-seen of the lot.

With a V and two dots, it might look like a smiley face.

However, what it really is is the Pedestrian Crossing Ahead Marking, or PCAM, in lovely acro-speak.

The PCAM are inverted white triangular markings painted on the road and placed before selected zebra crossings where motorists have been observed to not give way to pedestrians, such as those after a bend, LTA says.

“The markings come in pairs so as to give ample warning to motorists as they approach the zebra crossing.”

The PCAM complements other advance warnings provided by existing safety features like flashing beacons with black/yellow poles and white zigzag lines by the side of the road.

This particular sign in the picture can be found at the slip road exiting the TPE (SLE) into Pasir Ris Drive 8.